whats the best regulator to use for Scuba diving considering all factors including cost/value/quality?
Zeagle regulators.
Consistently rated a top performer and top pick by Scuba Diving magazine’s comparison tests, great factory support with free annual service parts if you buy from an authorized dealer, and dealers such as ScubaToys will match prices from grey market dealers.
Of the Zeagle regulators, I prefer the DS-Vs. Simple design, environmentally sealed, highly regarded by tech divers (similar to Apeks DS4).

the quality of the trip
References :
Zeagle regulators.
Consistently rated a top performer and top pick by Scuba Diving magazine’s comparison tests, great factory support with free annual service parts if you buy from an authorized dealer, and dealers such as ScubaToys will match prices from grey market dealers.
Of the Zeagle regulators, I prefer the DS-Vs. Simple design, environmentally sealed, highly regarded by tech divers (similar to Apeks DS4).
References :
http://www.scubaboard.com/
http://www.scubatoys.com/